General knowledge for teenagers

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Across
  1. 1. block-building video game. (9)
  2. 4. played at Wimbledon. (6)
  3. 5. known for its rings. (6)
  4. 7. princess with a magical icy power. (4)
  5. 8. boy with a lightning-shaped scar. (11)
  6. 9. media app famous for short videos. (6)
  7. 10. service known for Stranger Things. (7)
  8. 11. superhero known as the Dark Knight. (6)
Down
  1. 2. mascot. (7)
  2. 3. ocean on Earth. (7)
  3. 6. city famous for its Opera House. (6)
  4. 9. of "Shake It Off". (10)